:root{--bg:#f5f7fb;--card:#fff;--text:#14233b;--muted:#5f6f88;--blue:#2563eb;--blue-dark:#1d4ed8;--border:#dbe5f1;--success:#15803d;--warn:#d97706;--danger:#dc2626}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.container{max-width:1120px;margin:0 auto;padding:0 20px}.nav{display:flex;justify-content:space-between;align-items:center;padding:24px 0}.brand{font-size:20px;font-weight:800}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:14px;padding:13px 20px;font-weight:700;border:1px solid var(--blue);cursor:pointer;transition:.2s ease}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{background:#fff;color:var(--blue)}.hero{display:grid;grid-template-columns:1.2fr .9fr;grid-gap:26px;gap:26px;align-items:center;padding:34px 0 20px}.hero h1{font-size:60px;line-height:.98;margin:10px 0 16px}.kicker{color:var(--blue);font-weight:700}.kicker,.sub{font-size:18px}.sub{color:var(--muted);line-height:1.65;max-width:720px}.card{background:var(--card);border:1px solid var(--border);border-radius:22px;box-shadow:0 1px 0 rgba(0,0,0,.03)}.pad{padding:24px}.section{margin:24px 0}.section-title{font-size:24px;font-weight:800;margin:0 0 14px}.grid-2{grid-template-columns:repeat(2,1fr);grid-gap:20px}.grid-2,.grid-3{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,1fr);grid-gap:20px}.list{margin:0;padding-left:20px}.list li{margin:8px 0}.muted{color:var(--muted)}.small{font-size:14px}.trust{display:inline-block;background:#eef4ff;border:1px solid #cfe0ff;color:var(--blue);padding:8px 12px;border-radius:14px;font-weight:700}.step-no{width:36px;height:36px;border-radius:999px;background:#eaf1ff;display:flex;align-items:center;justify-content:center;margin-bottom:12px}.example-stat,.step-no{color:var(--blue);font-weight:800}.example-stat{font-size:52px}.upload-shell{max-width:920px;margin:0 auto;padding:12px 20px 30px}form{display:grid;grid-gap:18px;gap:18px}label{display:block;font-weight:800;margin-bottom:8px}input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:14px;background:#fff}textarea{min-height:100px;resize:vertical}.filebox{border:1.5px dashed #b9cce6;border-radius:18px;padding:20px;background:#fbfdff}.helper{font-size:14px;color:var(--muted);margin-top:8px}.note{background:#f8fbff;border:1px solid #dbeafe;color:#1e3a8a;border-radius:14px}.note,.notice{padding:12px 14px}.notice{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:14px}.actions{display:flex;gap:12px;flex-wrap:wrap}.results{max-width:1040px;margin:0 auto;padding:20px}.report-header{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:20px;gap:20px}.stat-box{background:#eff6ff;border:1px solid #dbeafe;border-radius:20px;padding:22px}.stat-box .big{font-size:36px;font-weight:800;color:var(--blue)}.kv{display:grid;grid-template-columns:160px 1fr;grid-gap:8px;gap:8px;margin:6px 0}.tag-high,.tag-low,.tag-medium{display:inline-block;padding:6px 10px;border-radius:999px;font-weight:700;font-size:14px}.tag-high{background:#ecfdf5;color:#166534}.tag-medium{background:#fffbeb;color:#92400e}.tag-low{background:#fef2f2;color:#991b1b}.result-correct{color:var(--success);font-weight:700}.result-incorrect{color:var(--danger);font-weight:700}.result-unclear{color:var(--warn);font-weight:700}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;background:#fff}td,th{padding:12px 10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{background:#f8fbff}.icon-title{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;margin:0 0 14px}.footer-space{height:30px}@media (max-width:920px){.grid-2,.grid-3,.hero,.report-header{grid-template-columns:1fr}.hero h1{font-size:42px}.kv{grid-template-columns:1fr}}